Improvement in coal-oil lamps



UNITED STATES PATENT OF ICE.

ALMON LEAGH, on UTIGA, NEW YORK.

IMPROVEMENT IN COAL-OIL LAMPS.

Specification forming partof Letters Patent No. 37,349, dated January 6, 1863.

' To all whom it may concern..-

Be it known that I, ALMON LEAGH, of Utica, in the county of Oneida and State of New York, have invented a newand Improved Lamp for Burning Goal-Oil; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawings, making a pirt of this specification, in which- Figurel is a front view of my invention; Fig. 2, a vertical section of the same, taken in the line m at, Fig. 1; Fig. 3, a horizontal section of the same, taken in the line y Fig. 1.

Similar letters of reference indicate corresponding parts in the several figures.

This invention relates to an improvement in coal-oil lamps, those which are designed to be used in railroad-cars and other places where lamps are subjected to a jolting or vibratory movement. 7

The invention is an improvement on a lamp patented by L. J. Worden and A. Leach, the Letters Patent bearing date July 23, 1861.

The object of the present invention is to render the burner of the lamp removable, so that it may be readily detached when necessary and without changing or altering the original plan of the patented lamp above alluded to.

The invention has also for its object a more perfect form of reflector than has been hitherto used, and which will be hereinafter fully described.

To enable those skilled in the art to fully understand and construct my invention, Iwill proceed to describe it.

A represents the reservoir or fountain, which may be constructed in any proper manner, and which communicates with a vertical tube, B, by means of a tube, 0, as shown in Fig. 2. The coal-oil, which is the burning material used, is placed in the reservoir or fountain A, and the tube B is supplied from A through the tube 0.

D is a cylinder or jacket which encompasses the tube D, and is considerably larger in diameter than the latter. This cylinder or jacket is permanently attached to the reservoir or fountain A, and the tube is supported within it by one or more arms, E, the cylinder or jacket D extendingsome distance below the tube B. In the upper end of the tube B there is fitted and permanently secured a socket, F, which is provided with an internal screw, a.

G represents a lamp-burner constructed in the same way as those usually employed for burning coal-oil. This burner is provided at its lower end with an external screw, b,'which screws into the socket F and secures the burner to the top of the tube B, as shown clearly in Fig. 2.

H represents a hollow cylinder, the upper end of which is permanently attached to the burner G at the point where the base of the cone or deflector I rests on the burner. This cylinder H is considerably larger in. diameter than the tube B, so as to admit of a space, 0, of requisite width, between B and H. The latter does not extend down as low as the former, as will be seen by referring to Fig. 2. The cylinderH is sufficiently smaller in diameter than the jacket D to admit of a space, d, between them, which is about equal in width to the space 0 between B and H. The upper end of this space d is covered by aninclined perforated plate, J, or a piece of wire-gauze would answer the purpose. This plate J is permanently attached to the burner just above the top of the cylinder H, and to'the outer edge of the plate J a pendent flange, K, is secured, said flange being of such diameter that it may when the burner is secured into the top ofthe tube B, fit snugly into the top of the jacket D, as shown clearly in Fig. 2.

The arrows in Fig. 2 show the manner in which the air is admitted to the flame through this burner, and the arrangement of the several parts as herein described corresponds substantially with the patented lamp of Worden and Leach, previously alluded to. In this lamp of Worden and Leach the lampburner is permanently attached-solderedto the jacket D, tube B, and cylinder H, and the interior of the lamp is therefore not accessibleunless the burner be detached by melting the solder. This feature is a very objectionable one, for the wick frequently slips down out of the wick-tube of the burner, and cannot be obtained without unsoldering the burner. By my improvement it will be seen that the burner may be detached .from the lamp equally as well as the burner of an ordithe upper part of the reservoir A, as shown clearly in Fig. 2. The reflectors L L are not placed in line with each other or in the same plane, but have an angular position relatively with each other, and are placed relatively with the burner or flame, as shown in Fig. 3. The reflectors are of circular form, and have convex centers-h surrounded by concave rims i, as also shown in Fig. 3. The burner G is directly in front of the joint j, where the two reflectors are connected together, and the reflectors have a slightly inclined position, as shown in Fig. 2. By this arrangement it will be seen that the rays of light will be thrown both up and down and to the right and left, as indicated by the red lines in Figs. 2 and 3, the dotted red lines indicating the rays refiected by the concave surfaces z, and the solid or unbroken lines indicating the rays reflected by the convex surfaces h.

The reflectors may be constructed of metal properly polished, or glass may be used, silvered at the back, as in the constructionpf mirrors.

I do not claim, broadly, a reflector having a convex and concave surface, for reflectors of that form have been previously used; but,

Havingthns described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. Securing the cylinder H, perforated plate J, and flange K to the burner G, as shown, when said burner is screwed into the tubeB, and all used in connection with the cylinder or jacket D, for the purpose herein set forth.

2. The combination of two reflectors, L L, formed each of concave and convex surfaces h 2, connected together angularly with each other, and placed in relation with the flame of the lamp, as herein specified.

ALMON LEAGH.

Witnesses:

WM. H. PRATT, Gr. J. LEAGI-I. 

